Topic
Hydroforming
About: Hydroforming is a research topic. Over the lifetime, 2796 publications have been published within this topic receiving 26293 citations. The topic is also known as: Bulge forming.
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TL;DR: The bulge height and the wall thickness reduction of the bi-layered hydroformed parts (responses) are modelled as functions of the geometrical factors using the combination of the finite element modelling (FEM) and Response Surface Methodology (RSM) for design of experiments (DOE).
42 citations
TL;DR: In this article, a simplified tooling for the hydroforming process was designed, fabricated and tested with the use of constant hydraulic pressure for the drawing operation, and a 10'000 psi (68.9 kPa) hydraulic pump together with a pressure relief valve was used to supply the pressure needed in the process.
41 citations
TL;DR: In this article, the effects of pre-treatment conditions on the flow behavior and the microstructures during warm deformation of tube materials were qualitatively analyzed, and the results showed that sufficient elongation properties of high strength aluminum alloys, which are necessary for successful hydroforming of complex shaped parts in a single operation, could be achieved by the selection of pertinent pretreatment conditions and deformation temperatures for hydroforming.
41 citations
TL;DR: In this paper, a number of failure criteria and theories were employed to investigate their applicability in meso-scale plastic deformation, including the Swift/Hill criteria, Marciniak-Kuczynski model, ductile fracture criteria such as Freudenthal, Cockcroft & Latham, Ayada and Oyane models, and the Gurson-Tvergaard-Needleman model coupled with the Thomason void coalescence model.
40 citations
TL;DR: In this article, the classical formulations for material forming either in the solid or in the liquid state are briefly recalled, in terms of material constitutive behavior, friction law, integral forms and finite element discretization.
Abstract: The classical formulations for material forming either in the solid or in the liquid state are briefly recalled, in terms of material constitutive behavior, friction law, integral forms and finite element discretization. A few important numerical issues are discussed, including meshing, remeshing and adaptivity, parallel computing and coupling between work-piece and tools. Five examples of applications of finite element models to new processes are presented: friction stir welding, hot stamping of quenchable steels, tube hydroforming, thixoforming and self piercing riveting. It is concluded that many new forming processes can be designed and optimized much more effectively using the numerical simulation technology.
40 citations